We use the universal classification ranking system by APPA. I have nothing to do with nor any say on ranking matters. A D-4team is allowed 2 D-3 X-Ball players on roster. You will find if you are D-3 in 5-man your rankings start over in X-Ball @ D-4 or D-5. but when you go back to 5-man you will retain the higher 5-man ranking. X-Ball or race to 4 is considered a higher division.